feat(external-dns-extensions): add new Helm chart for external-dns ex…

…tensions

- Added a new Helm chart for managing external-dns CRDs.
- Included templates for DNSEndpoint resources.
- Provided values.yaml file to customize the deployment.
- Created README.md with instructions on how to deploy and customize the chart.
- Added LICENSE file.

Also, updated argo-cd and cert-manager extension templates:
- Enhanced metadata section in multiple yaml files under argo-cd and cert-manager extensions. Now supports custom labels and annotations.

src/charts/argo-cd-extensions/templates/01-appprojects.yaml

@@ -8,6 +8,15 @@ kind: AppProject
 metadata:
   name: {{ $fullName }}
   namespace: {{ $item.namespace | default $.Release.Namespace | default "default" }}
+  labels:
+    {{- include "argo-cd-extensions.labels" $ | nindent 4 }}
+    {{- with $item.labels }}
+    {{- toYaml . | nindent 4 }}
+    {{- end }}
+  {{- if $item.annotations }}
+  annotations:
+    {{- toYaml $item.annotations | nindent 4 }}
+  {{- end }}
 spec:
   {{- if $item.description }}
   description: {{ $item.description }}

src/charts/argo-cd-extensions/templates/02-applications.yaml

@@ -8,6 +8,15 @@ kind: Application
 metadata:
   name: {{ $fullName }}
   namespace: {{ $item.namespace | default $.Release.Namespace | default "default" }}
+  labels:
+    {{- include "argo-cd-extensions.labels" $ | nindent 4 }}
+    {{- with $item.labels }}
+    {{- toYaml . | nindent 4 }}
+    {{- end }}
+  {{- if $item.annotations }}
+  annotations:
+    {{- toYaml $item.annotations | nindent 4 }}
+  {{- end }}
 spec:
   project: {{ $item.project | default "default" }}
   sources:

src/charts/cert-manager-extensions/templates/certificates.yaml

@@ -8,6 +8,15 @@ kind: Certificate
 metadata:
   name: {{ $fullName }}
   namespace: {{ $item.namespace | default $.Release.Namespace | default "default" }}
+  labels:
+    {{- include "cert-manager-extensions.labels" $ | nindent 4 }}
+    {{- with $item.labels }}
+    {{- toYaml . | nindent 4 }}
+    {{- end }}
+  {{- if $item.annotations }}
+  annotations:
+    {{- toYaml $item.annotations | nindent 4 }}
+  {{- end }}
 spec:
   secretName: {{ $item.secretName }}
   issuerRef:

src/charts/cert-manager-extensions/templates/clusterIssuers.yaml

@@ -9,6 +9,15 @@ kind: ClusterIssuer
 metadata:
   name: {{ $fullName}}
   namespace: {{ $item.namespace | default $.Release.Namespace | default "default" }}
+  labels:
+    {{- include "cert-manager-extensions.labels" $ | nindent 4 }}
+    {{- with $item.labels }}
+    {{- toYaml . | nindent 4 }}
+    {{- end }}
+  {{- if $item.annotations }}
+  annotations:
+    {{- toYaml $item.annotations | nindent 4 }}
+  {{- end }}
 spec:
   {{- if $item.acme }}
   acme:

src/charts/cert-manager-extensions/templates/issuers.yaml

@@ -9,6 +9,15 @@ kind: Issuer
 metadata:
   name: {{ $fullName}}
   namespace: {{ $item.namespace | default $.Release.Namespace | default "default" }}
+  labels:
+    {{- include "cert-manager-extensions.labels" $ | nindent 4 }}
+    {{- with $item.labels }}
+    {{- toYaml . | nindent 4 }}
+    {{- end }}
+  {{- if $item.annotations }}
+  annotations:
+    {{- toYaml $item.annotations | nindent 4 }}
+  {{- end }}
 spec:
   {{- if $item.acme }}
   acme:

src/charts/external-dns-extensions/.helmignore

@@ -0,0 +1,23 @@
+# Patterns to ignore when building packages.
+# This supports shell glob matching, relative path matching, and
+# negation (prefixed with !). Only one pattern per line.
+.DS_Store
+# Common VCS dirs
+.git/
+.gitignore
+.bzr/
+.bzrignore
+.hg/
+.hgignore
+.svn/
+# Common backup files
+*.swp
+*.bak
+*.tmp
+*.orig
+*~
+# Various IDEs
+.project
+.idea/
+*.tmproj
+.vscode/

src/charts/external-dns-extensions/Chart.yaml

@@ -0,0 +1,19 @@
+apiVersion: v2
+name: external-dns-extensions
+description: A Helm chart for external-dns extensions
+type: application
+version: 1.0.0
+appVersion: 1.0.0
+
+
+icon: https://raw.githubusercontent.com/emberstack/CDN/main/projects/helm-charts/generic/emberstack_icon.png
+keywords:
+- external-dns
+- dns
+- DNSEndpoint
+home: https://github.com/emberstack/helm-charts
+sources:
+- https://github.com/emberstack/helm-charts
+maintainers:
+- name: winromulus
+  email: helm-charts@emberstack.com

src/charts/external-dns-extensions/LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2024 emberstack
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

src/charts/external-dns-extensions/README.md

@@ -0,0 +1,18 @@
+# cert-manager Helm Extensions
+This chart provides templates for external-dns CRDs. It can be used as the base for dynamic resources.
+> Requirements: external-dns installed in the cluster.
+
+### Deployment to Kubernetes using Helm
+
+Use Helm to install the latest released chart:
+```shellsession
+$ helm repo add emberstack https://emberstack.github.io/helm-charts
+$ helm repo update
+$ helm upgrade --install external-dns-extensions emberstack/external-dns-extensions
+```
+
+You can customize the values of the helm deployment by using the following Values:
+
+| Parameter                            | Description                                       | Default               |
+| ------------------------------------ | --------------------------------------------------| --------------------- |
+| `dnsEndpoints`                       | Array of DNSEndpoints to template                 | `[]`                  |

src/charts/external-dns-extensions/templates/_helpers.tpl

@@ -0,0 +1,53 @@
+{{/*
+Expand the name of the chart.
+*/}}
+{{- define "external-dns-extensions.name" -}}
+{{- default .Chart.Name .Values.nameOverride | trunc 63 | trimSuffix "-" }}
+{{- end }}
+
+{{/*
+Create a default fully qualified app name.
+We truncate at 63 chars because some Kubernetes name fields are limited to this (by the DNS naming spec).
+If release name contains chart name it will be used as a full name.
+*/}}
+{{- define "external-dns-extensions.fullname" -}}
+{{- .Release.Name | trunc 63 | trimSuffix "-" }}
+{{- end }}
+
+{{/*
+Create chart name and version as used by the chart label.
+*/}}
+{{- define "external-dns-extensions.chart" -}}
+{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" }}
+{{- end }}
+
+{{/*
+Common labels
+*/}}
+{{- define "external-dns-extensions.labels" -}}
+helm.sh/chart: {{ include "external-dns-extensions.chart" . }}
+{{ include "external-dns-extensions.selectorLabels" . }}
+{{- if .Chart.AppVersion }}
+app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}
+{{- end }}
+app.kubernetes.io/managed-by: {{ .Release.Service }}
+{{- end }}
+
+{{/*
+Selector labels
+*/}}
+{{- define "external-dns-extensions.selectorLabels" -}}
+app.kubernetes.io/name: {{ include "external-dns-extensions.name" . }}
+app.kubernetes.io/instance: {{ .Release.Name }}
+{{- end }}
+
+{{/*
+Create the name of the service account to use
+*/}}
+{{- define "external-dns-extensions.serviceAccountName" -}}
+{{- if .Values.serviceAccount.create }}
+{{- default (include "external-dns-extensions.fullname" .) .Values.serviceAccount.name }}
+{{- else }}
+{{- default "default" .Values.serviceAccount.name }}
+{{- end }}
+{{- end }}

src/charts/external-dns-extensions/templates/dnsEndpoints.yaml

@@ -0,0 +1,43 @@
+{{- range .Values.dnsEndpoints }}
+{{- $item := . -}}
+{{- if $item.enabled }}
+{{- $fullName := $item.fullnameOverride | default (print (include "external-dns-extensions.fullname" $) "-" $item.name) }}
+---
+apiVersion: externaldns.k8s.io/v1alpha1
+kind: DNSEndpoint
+metadata:
+  name: {{ $fullName }}
+  namespace: {{ $item.namespace | default $.Release.Namespace | default "default" }}
+  labels:
+    {{- include "external-dns-extensions.labels" $ | nindent 4 }}
+    {{- with $item.labels }}
+    {{- toYaml . | nindent 4 }}
+    {{- end }}
+  {{- if $item.annotations }}
+  annotations:
+    {{- toYaml $item.annotations | nindent 4 }}
+  {{- end }}
+spec:
+  endpoints:
+    {{- range $endpoint := $item.endpoints }}
+    - dnsName: {{ $endpoint.dnsName }}
+      {{- if $endpoint.labels }}
+      labels:
+        {{- toYaml $endpoint.labels | nindent 8 }}
+      {{- end }}
+      {{- if $endpoint.providerSpecific }}
+      providerSpecific:
+        {{- toYaml $endpoint.providerSpecific | nindent 8 }}
+      {{- end }}
+      {{- if $endpoint.recordTTL }}
+      recordTTL: {{ $endpoint.recordTTL }}
+      {{- end }}
+      recordType: {{ $endpoint.recordType }}
+      {{- if $endpoint.setIdentifier }}
+      setIdentifier: {{ $endpoint.setIdentifier }}
+      {{- end }}
+      targets:
+        {{- toYaml $endpoint.targets | nindent 8 }}
+    {{- end }}
+{{- end }}
+{{- end }}

src/charts/external-dns-extensions/values.yaml

@@ -0,0 +1,10 @@
+nameOverride: ""
+fullnameOverride: ""
+
+dnsEndpoints:
+  - name: "test-endpoint"
+    enabled: true
+    endpoints:
+      - dnsName: "test-endpoint.example.com"
+        recordType: "A"
+        targets: [8.8.8.8]